In the afternoon of September 19, through monitoring on satellite cloud images, weather radar images, and lightning positioning, it shows that thunderstorm clouds are developing, causing showers and thunderstorms and lightning in the areas of Ca Mau, Can Tho, Vinh Long, An Giang, Dong Thap, Tay Ninh, Ho Chi Minh City...
In the next 0-3 hours, thunderstorms will continue to develop and cause showers accompanied by thunderstorms and lightning for the above areas, then thunderstorms tend to expand and spread to other neighboring areas. Common rainfall is from 5-20 mm, in some places over 30 mm. In thunderstorms, beware of tornadoes, lightning, hail, strong gusts of wind at level 5-8 (8-21 m/s), heavy rain causing localized flooding.
Weather pattern forecast for the next 24-48 hours, the intertropical convergence zone with its axis through the South Central and Southern regions gradually strengthens and tends to lower its axis southward, the low pressure area on the intertropical convergence zone moves westward.
Southwest monsoon in the South has weak to moderate intensity. Above, the northern branch of the subtropical high pressure continues to encroach westward. Wind convergence is strongly operating in the Southern region.
Weather pattern forecast for the next 3-10 days, the intertropical convergence zone with its axis through the South Central and Southern regions will be maintained, from about September 24th there will be a trend of slightly raising the axis to the North. Southwest monsoon in the South has weak to moderate intensity. Above, the subtropical high pressure branch to the North encroaches west after stable activity, from September 24th it recedes to the East.
Therefore, from 1:00 PM on September 19th to 1:00 PM on September 21st, Ho Chi Minh City area will have moderate to heavy rain, with very heavy rain in some places. Total rainfall in 48 hours is commonly 70-150 mm, with some places over 150 mm.
Prevent the possibility of heavy rain causing flooding in low-lying areas, urban areas, industrial areas, riverside areas and canals. In thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind. Prevent the risk of flooding on small rivers and streams, landslides on slopes in the Lam Dong - Dong Nai areas.
